Sink faucet



FIG. 1 is a right perspective view of a sink faucet showing the new design

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a left perspective view thereof. 

CLAIM The ornamental design for a sink faucet, as shown and described. 